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Full Discussion: Read File and use contents to rename another
Top Forums Shell Programming and Scripting Read File and use contents to rename another Post 302291084 by Shark Tek on Tuesday 24th of February 2009 04:06:40 PM
Old 02-24-2009
Read File and use contents to rename another
Hello guys, thank God that I found this forum.

I hope that someone can help me because I don't have any idea on how to start it. I know that for some of you this is a very simple task but I'm not as advance on shell scripting like many people out there.

I got this file with a permanent filename (RSA_RECORDS.txt) that the content always starts like this.

Code:
#  ISSUER CODE: QPPS                                                                                                                                                                                    
#  FROM DATE: 20090224                                                                                                                                                                                  
#  TO DATE: 00000000                                                                                                                                                                                    
#  SEQUENCE NUMBER: 001                                                                                                                                                                                 
#  RECORD COUNT: 0000000003                                                                                                                                                                             
#  NUMBER OF FIELDS: 015                                                                                                                                                                                
#  DELIMITER: ; 
BLABLABABLABLABLA
BLABLABABLABLABLA
BLABLABABLABLABLA

I need a shell script that can read those first four lines and creates a copy of that same file with the following name.

QPPS_20090224_00000000_01.txt

As you can notice the name is created by using those first four lines of the file.

<ISSUER CODE>_<FROM DATE>_<TO DATE>_<SEQUENCE NUMBER>.txt


The only issue here is that the main file changes everyday and that is the reason that I need a shell script that can dynamically create a copy of that main file with an specific name.

On my Unix server I can see that I have awk and sed support. No perl, python, ruby, etc.

Thanks for your help guys
Last edited by Shark Tek; 02-25-2009 at 01:23 PM..
 

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LEARN ABOUT OSX

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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